How do you learn bonds quickly and correctly without memorising a list of market terms? Think of a bond as an investment that generally represents money lent to an issuer, such as a government or business, under agreed conditions. The issuer may promise scheduled interest payments and repayment of principal at maturity, but those promises still have risks, and bond prices can change if you sell before the relevant date. This eduKateSG Finance Quick Notes lesson teaches five essential bond words and a S$1,000 example so you can understand what you are actually owed and what is uncertain.
- Issuer: the government, company or other organisation that borrows money.
- Face value: the amount specified for repayment under the bond’s terms.
- Coupon: the contractual interest payment, if the bond pays coupons.
- Maturity: the scheduled date for repayment under a conventional bond.
- Market price: what another investor may pay for the bond today; it need not equal face value.
- Risk: issuer default, changing interest rates, liquidity and currency movements can affect outcomes.
Teaching paragraph 1 — understand who owes whom. When a company issues a conventional bond and an investor buys it at issue, the company has borrowed under the bond’s contractual terms. The bondholder is generally a creditor, not an ordinary shareholder. If the bond has a S$1,000 face value and an annual 3% coupon, the simplified annual interest payment is S$30. If the issuer remains able and legally obliged to make payments and the bond reaches its stated maturity, it repays the promised principal under the contract. But neither the company’s financial health nor the investor’s ability to sell earlier should be assumed.
Teaching paragraph 2 — learn the difference between coupon and price. Imagine a hypothetical S$1,000 face-value bond that pays S$30 a year. The coupon rate is 3% of face value, regardless of whether another investor later offers S$980 or S$1,020 for the bond in the market. The bond’s market price is what it trades for, not automatically the amount the issuer will repay at maturity. At a S$980 purchase price, S$30 is approximately 3.06% of the purchase price for one year; that simple coupon-to-price percentage is often called current yield. It is not the bond’s complete yield to maturity.
Teaching paragraph 3 — practise a loss scenario without hiding it. Suppose you purchased the imaginary bond for S$1,000, received exactly one S$30 coupon and then sold it for S$950. Ignoring transaction charges, tax, accrued-interest settlement and any other payments, the simple cash result is S$950 + S$30 − S$1,000 = −S$20. You earned coupon income but still lost money overall. The lesson is that receiving interest does not prevent a capital loss if you sell a bond for less than you paid. The calculation is illustrative, not a prediction about a particular government or corporate bond.
The Five Bond Words to Remember
- Issuer: who is responsible for obligations under the bond.
- Principal or face value: the amount referenced for contractual repayment.
- Coupon rate: interest rate on face value under the bond’s terms.
- Maturity: when a conventional bond is scheduled to be repaid.
- Market yield: a measure of return implied by its price and promised cash flows, subject to assumptions.
Some instruments differ from the conventional fixed-coupon bond: zero-coupon bonds may not pay periodic interest, floating-rate bonds have changing interest, and perpetual securities may have no maturity date. A beginner should master the ordinary example first, but should not assume every security called ‘fixed income’ behaves in exactly the same way.
The Basic Coupon Calculation
Annual coupon amount = face value × annual coupon rate, for a conventional fixed annual coupon. In the illustration, S$1,000 × 0.03 = S$30. A bond paying coupons twice a year might distribute the annual contractual amount in instalments, subject to its payment schedule and conditions. Always check whether the quoted coupon is per year and how frequently it is paid.
Worked Example: Coupons Do Not Erase Price Losses
- Purchase cost: S$1,000.
- Face value: S$1,000.
- Annual coupon: 3% of face value.
- One coupon received: S$30.
- Illustrative sale price before maturity: S$950.
- Cash received in this simplified example: S$980.
- Net result: −S$20, before all omitted charges and adjustments.
Bond dealing in practice can also involve accrued interest and other settlement conventions. They may affect the actual money exchanged at a sale. We have left them out deliberately so that you can see the central lesson. Do not mistake this toy calculation for a full trading quotation.
Why Bond Prices and Interest Rates Often Move Oppositely
Imagine an old bond pays a fixed coupon based on conditions when it was first issued. Later, newly issued bonds with similar credit risk and maturity may offer higher yields because market interest rates rose. Investors generally need a lower market price for the older fixed-coupon bond to make its remaining cash flows competitive. When comparable yields fall, the reverse often happens. This is an important relationship, but not an exact rule that predicts a particular bond’s price on every day; credit news and other factors also matter.
Coupon Rate, Current Yield and Yield to Maturity
- Coupon rate: contractual interest divided by face value.
- Current yield: annual coupon divided by current market price, ignoring other effects.
- Yield to maturity: a return measure using the price, timing of remaining promised cash flows and a set of assumptions, including no default.
- Actual realised return: what the investor ultimately gains or loses, after actual cash flows and costs.
A bond with a 4% coupon is not automatically a bond that will earn 4% from the price you pay today. Buying at a premium or discount changes the relationship, and selling early changes realised returns. Start by separating these four labels before using a bond calculator.
What Does Default Risk Mean?
A bond issuer might fail to pay a coupon or principal as promised. This is default risk, also called credit risk. The risk depends on the issuer’s obligations, financial strength and wider circumstances. A high coupon can be compensation for greater risk, not a free bonus. Credit ratings can help describe relative creditworthiness but are opinions rather than guarantees, and an unrated bond is not automatically safe.
What Does Liquidity Risk Mean?
Even if you are willing to sell your bond, you may not find a buyer promptly at an acceptable price. Some bonds are actively traded; others may have little activity. This is liquidity risk. It matters especially if money is needed before maturity. Do not describe the principal repayment at maturity as cash immediately available today. The difference between holding to maturity and selling early is one of the first things a bond learner should understand.
Government Bonds, Corporate Bonds and Special Structures
Governments issue bonds to raise funds under public borrowing arrangements. Companies may issue bonds to finance operations or investments. Singapore Savings Bonds and Singapore Government Securities have specific characteristics and application or redemption procedures described by the Monetary Authority of Singapore; they should not simply be treated as ordinary corporate bonds. Some products have early-redemption rights, variable coupons or no maturity. Before comparing yields, identify the actual issuer, instrument and terms.
Bondholders Versus Shareholders
Shareholders own equity in a company and participate in possible price gains and dividends, but ordinary shareholders are usually behind creditors when a company is wound up. Bondholders have contractual creditor claims with specific ranking and restrictions. The ranking of a particular bond depends on whether it is secured, unsecured or subordinated and on applicable law. ‘Bond’ does not mean ‘risk-free’; nor does ‘share’ mean its holder can claim a promised coupon. See How to Learn Stocks Quickly and Correctly to compare the two instruments.
Questions to Ask Before Evaluating a Bond
- Who issues it, and how might that issuer repay its obligations?
- What is the currency and face value?
- Does it pay coupons? If so, what amount and frequency?
- When is the maturity date, if any?
- What is the price today compared with face value?
- What risks arise from rates, credit, currency or limited trading?
- Are there fees, early-call rights or unusual repayment terms?
Common Beginner Errors
- Thinking the coupon rate equals the realised investment return.
- Assuming every bond is guaranteed by a government.
- Forgetting that market prices can fall if interest rates rise.
- Assuming the issuer must repay principal at once whenever the holder wants cash.
- Treating an unusually high yield as proof of a superior investment.
- Ignoring currency risk on foreign bonds.
- Confusing a perpetual security with a conventional bond that has a definite maturity.
Ten-Minute Bond Practice
- Minutes 1–2: explain a bond as a lending arrangement in your own words.
- Minutes 3–4: calculate a 4% annual coupon on a S$500 face-value bond.
- Minutes 5–6: imagine selling the bond below the price paid and calculate the price loss.
- Minutes 7–8: explain why a new bond with higher yield can make an old bond less attractive.
- Minutes 9–10: list two reasons a bond investment might lose money.
Quick Answers
Question 1: What is the annual coupon on S$500 at 4%? Answer: S$20 under the simple example.
Question 2: If a bond bought for S$500 is sold for S$470 and one S$20 coupon was received, what is the simplified result before costs? Answer: S$470 + S$20 − S$500 = −S$10.
Question 3: Does a bond’s credit rating guarantee repayment? Answer: No. Ratings are opinions that can change, and the issuer could still default.
Continue Learning
Read How to Learn Stocks Quickly and Correctly to see the difference between ownership and lending. How to Learn ETFs Quickly and Correctly introduces funds that may hold many bonds, while How to Learn Asset Allocation Quickly and Correctly explains how different assets fit together. For investment risk, see How to Learn Investment Risk and Diversification Quickly and Correctly.
Official Source and the Main Lesson
See MoneySense — Understanding Bonds for Singapore explanations of coupon rates, maturity, prices, yields and common risks. This page is general financial education, not a product recommendation. The lasting lesson is bond interest is a contractual promise subject to the issuer’s ability to pay, while the price you receive for selling earlier may be different from the face value.